METHOD FOR PURIFICATION OF A HYDROCARBON-CONTAINING GAS FROM SULPHUR-CONTAINING COMPOUNDS AND UNIT FOR IMPLEMENTATION THEREOF Russian patent published in 2021 - IPC B01D53/52 

FIELD: treatment of gases.

SUBSTANCE: invention relates to a method for purification of a hydrocarbon-containing gas from sulphur-containing compounds, wherein electrolysis of an electrolyte solution containing water, sulphuric acid H₂SO₄ and metal ions is conducted in an electrochemical reactor, the ion oxidation rate is changed, hydrocarbon-containing raw materials are mixed with the electrolyte solution, the sulphur-containing compounds are oxidised with metal ions and the electrolyte solution containing oxidised sulphur-containing compounds is isolated from the purified hydrocarbon-containing raw materials. The electrolyte solution comprises lead ions Pb²⁺, Pb⁴⁺, and electrolysis thereof is conducted in an electrochemical reactor equipped with lead electrodes connected to a direct current source and coated with lead sulphate PbSO₄ and lead oxide PbO₂. The hydrocarbon-containing gas purified from sulphur-containing compounds is mixed with an electrolyte solution containing water and sulphuric acid; the gas-liquid mixture of the gas and the electrolyte solution is supplied into an electrochemical reactor, and electrolysis of said mixture is conducted. On the electrode connected with the positive terminal of the direct current source, the sulphur-containing compounds are oxidised in a reaction thereof with lead ions Pb⁴⁺ and water forming sulphuric acid H₂SO₄ and lead sulphate PbSO₄. The hydrocarbon-containing gas purified from sulphur-containing compounds is isolated from the electrolyte solution and removed from the electrochemical reactor. The invention also relates to purification of a hydrocarbon-containing gas from sulphur-containing compounds.

EFFECT: electrochemical purification of gases when using a simpler structure of the unit for implementation thereof and consuming less energy.

17 cl, 1 dwg, 1 tbl, 1 ex